Improvement in steam-engines



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Letters Patent No. 114,429, dated May '2, 1871; antedated April 2,6,1871.v

IMPROVEMENT' IN STEAM-ENGINES. I

TheSchedule referred to in these Letters Patent and making partGLEN-same.

too fullyI described hereafter to need preliminary explanation, thewhole forming a cheap, simple, safe, and

' easily-managed motive-power' machine, for driving small lathes,sewing-machines, ehurns, and other objeotl which do not require 'muchpower to operate.

.Description of-itedccompanyingDrawing. v

Figure' 1 (drawing No. l) is' a vertical section of Amy improved engineand generator;

Figure-fhaa transverse sectional Vlevation on theline l' 2, iigi 1; i

.Figure 3, a sectional plan view of tig.l 1; Figures 4 and 5,detached'sectional views of parts of the apparatus;

4Figure 6, (drawing No. 2,) a sectional elevation of a. modided form ofgenerator;

" Figure?, a sectional plan on tlieline 3 4, iig; 6;

Figure '8, a sectional elevation'of a modiiedform of engine;

Figure 9, a detached sectional view of part of g.8 and Figure 10,51,sectional elevation of an indicator which General Description.

The body di' the generator Z consists of a hollow cylinder', C, totheoutsidepf which, at the upper and lower ends, are screwed rings formingflanges, and to the upper flange is bolted the castmetal bed-plate-.F

of the engine.

. To the lower flange is bolted the flange of a detachaf 'ble cast-metaliiue, H, across the lower expanded end of which extend tubes t t', thetubes t alternating with and being at right angles to the tubes t; aud

near the. upper end ofthe due H is a lateral flanged branch, N, whichextends through the cylinder C andv communicates with a verticalsmoke-pipe, Av

Into .a cap at the upper end of the flue H is screwed a `tubular case,T, open only at the upper end, and e?.- tending downward into theilue;and into this case exv tends a pipe, B, open at its lower end.

The cylinder C is surrounded by a cas1ng,on the top of which theprojecting edge of the bed-plate F bears, and within the lower portionof this casing, belowthe` cylinder C, extend two pipes, lh, thelatterbeing pro-v vided at its inner' end with a gas-burner, B', andtlJie former being bent into a ring and provided with a se ries ofburners, b.

To the bedplatcF is secured a case, G, which communicates with a pipe,g', leading to asnitable gas-reservoir, and having a scat to which isfitted a valve,- 0, the latter resting on a corrugated thin metal tube,p,

which communicates with the steam-space 0 in the 1 'upper part of thegenera-toa A rod, g,- extends fromthe valve o into theboilcr, and isprovided with a weigbiaQ, so proportioned that it will compress thecorrugated tube p and withdraw-the valve from its seat when the pressureof 'the steam is not sufficient to expand the tube and raise the valve.-The tube h communicates with the casing Gr above the valve so thataconstant supply of gas is furhed to the burner B', while the tube l`communicates with the4 'casing below the valve so that when the pressureof steain ryi thin 'the generator becomestoogreat the `valve will beclosed andthe'supply of gas to the burn` ers b.will` be cut oil". On thepressure being reduced the valve falls and the gas passing-from theburners b is `relit by the flame of the burnerB.

The continuity ofthe pipe'l is interrupted by acaseniei site peut esteing, K, containing'a corrugated tube, into` which an exf' pansion rod,m, secured to the generator,l projects, as

When the water becomestoo nlower the pressure and heat too great therodmwill expand and close the mouth of the lower` portion of the pipe h,thereby cutting'oif the gas from the 1burners, b, the rod contract-V ingwhen water isintroduced', and remaining in a. contracted state as iongas the boiler remains in a safe condition, and permitting the passageofgas to the vsaid burners b.

On the bed-plate F are two standards, E E', the latter having, near itsupper end, an opening, a', for the reception of the detachable bushingaf of a cran kshaft, a, the opposite end 'ofzthe latter extendingthrough the upright E and through a cylindrical projection on the same,and. carrying at its outer end a flywheel, V, the latter being recessedatoue side to receive the pro# jection e, and having at theother side agrooved pulley, P.

. The opening u.' is of such a size as' to permit the I longitudinalinsertion of the shaft a andthe passage of its cranks, the bushing abeing then inserted, and in both uprights E E' are oil-recesses, springsn ou which press lubricating-pads nl' against the shaft.

The bed-plate F is depressed at the center to, form a chamber, withwhich communicates the steam-pipe B, a cock, R, servingto close thecommunication between the chamber and the boiler when required, (fig. g2 and to theplate F istted a plate F", having at the plugs c in the'plate F", and are connected by rods o to the cranks on thediivingshaft. l

The lower ends ofthe cylinders c are closed by screw-v and in theprojection F are bored openings which extend to the sides of theprojections and form the steam and exl'laiist-poi-ts cithe'cyiinder-valves at,

connected to the rods 653,' sliding on the faces or the projections F3over the said ports, and being suitably operated by cranks on the shafta through connecting- `Within the recessed side of the ily-wheel V is ayoke, d, att-ached at one end to a spiral spring, Ir', which is securedat the other end to the rim of the Wheel; and to the arms of the yokeAis attacheda weight, i', which, as the wheel revolves, moi es towardthey periphery by centrifugal force, overcoming the action of thespring, and if the wheel revolves too rapidly causes a pad, e', on theyoke d to bear on the hub e and retard the motion of the'engine.

. Operation. f

Water is introduced into the generator to the height of the line n, fig.1, through an opening in the plate F', to which is tted a steam-tightplug, f; gas is passed to the pipe gand ignited as it issues 'from theburners B' b, the heat from the flames and from the .heated products ofcombustion. as they pass upward through the flue E and in contactfwiththe pipes t t' and 'l heating the Water in the coller, generatingsteam,which passes into the pipe T, where it is dried and superheated,and through the pipeB to the cham ber F and to the cylinders,operatingthe pistons in the ordinarymanner. I

Should the pressure become too great the supply of gas -will be reducedor cut ofi' bythe action or" the expansion-tube p, as before described,while the descent oi the water below the rod m-will produce a likeeffect.

' By-v constructing the engine and generator as above described many ofthe details and a largeamount of nice Sitting and adjusting of partsrequired in making an'ordinaryvsteam-motor are avoided; the apparatus isstrong, substantial, easily and cheaply manufactured, not liable to getout of order, readily repaired if injured, and may be safely intrustedto the care of those not competent to take charge ol" the running of arrordinaryl engine.

Some of the features inthe construction .of the apparatus may bevaried-for-insta'nce, ordinary tubular fines fm', communicating with ahollow cap, c', to which a descending draught-pipe, D', is connected, asshown in figs. 6 and 7, may ne substituted for tbevue E, and a singlecylinder may be used with a shaft extending through one upright only, asshown in tig. 8.

Where it is necessary, a hollow guide, s','may be secured to the uprightto guide the piston, as shown in g. 8.

Claims.

may be consumed in supplying steam to the engine.`

2. rlhe generator, consisting .of the cylinder G,

'anges screwed onto the same, plate F', and castn metal flue H,constructed and arranged substantially as described. Y Y Y 3. Thecombination, with the generator Z and its due or dues, of the tube Textending into the ues, and receiving the steam-pipe B, as set forth.

d. The cast-metal due -H, With-its crosstubes t t',

and branch N.. arranged as described.

.5. A plate, F, having a projection, F, extending. into a chamber, F, inthe bed-plate, and recessed tov receive pistons c', as set forth. v

-6. The projection -Fsm'rounded by a steam-chamber, F, having passagesand ports, as described, and provided lwith valves .arranged to slide onone or more ofthe exposed sides, as set forth.

7. The combination of the plate F', itschamber F, and detachable vplateF", its projection F3, chamber, passages, valves, and pistons, allsubstantially as set forth.l j l 8. The upright E', with its openings a'and detachable bearing a", in combination with the upright E andycrank-shaft e, as described. 9. The recess in the uprights', containingsnringsl n' and pads n'f, as set forth.

l0. lh'e wheel V, revolving adjacent to a stationary hub, e, andcarrying a sliding weight, I, 'connected to a pad, c', and operating thelatter and operated by asprin'g, r', substantially as set forth.

1l. The burners b, communicating through a tube, l, with a casing, G,containing a valve, o, operated by the pressure of steam in thegasometer, substantiallyas set forth.

12. rlhe said burners l), communicating with arcgulating apparatus, incombination with a burner, B', continuously supplied with gas,asspecified.

13. The tube l, communicatingwith a'casing, K, containing avalveroperated on the descent of water inthe boiler, as specified.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses. y.

, FONTAINE. Witnesses: i

Y S: RIMAREL,.

0. G. Tamron.

